Elevator for harvesting-machines



' (No Model.)

J. B. GRIMMBTT ELEVATOR FOR HARVESTINGMAGHINES.

No. 555,481. Feb. 25, 1896.

rmsm. 014% W UNITED STATES PATENT OFFICE.

JOHN B. GRIMMETT, OF OORSO, MISSOURI.

ELEVATOR FOR HARVESTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 555,481, dated February25, 1896.

Application filed March 28, 1893.

To all whom it may concern:

Be it known that I, JOHN B. GRIMMETT, a citizen of the United States,residing at Corso, in the county of Lincoln, State of Missouri, haveinvented certain new and useful Improvements in Elevators forHarvesting-Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains tomake and use thesame.

My invention relates .to an improvement in elevators forharvesting-machines.

The ob,'ect of my invention is to adapt th elevator for use in eitherlight or heavy grain.

The invention will first be described in connection with theaccompanying drawings and then pointed out in the claims.

In the drawings, Figure 1 is a perspective view, partly in section, ofan elevator embodying my improvements. Fig. 2 is a longitudinal sectionof the same. Fig. 3 is a side view of the same. Fig. 4 is a detail ofone of the lugs.

Referring to the drawings, A is the usual elevator-casing, having slotsat 1 and 2, as shown.

B is an upper drum-shaft on which is pivotally hung a pair of upper sidebars, 3, in whichis journaled an idler-drum O, a driving-drum D beingfixed on the drum-shaft B between the side bars, as will be fullyunderstood from the drawings.

E is an endless canvas apron constructed as usual and passing around theidler-dru1n O and driving the drum D, being operated by power applied tothe drum-shaft B in any suitable manner, as by pulley 4:, the end of thedrum-shaft being extended beyond the casing A for that purpose.

Each upper side bar, 3, is provided with a lug 5 extending outwardthrough the slots 1 and projecting a short distance beyond the sides ofthe casing A, these ends being enlarged and provided with studs 6, whichenter and retain in place the lower end of springs 7, held at theiropposite ends by rigid stops 8 fixed to the sides of the casing at theends of the slots 1.

A similar endless apron, E, is located in the casin g A below the'upperapron, the construction of the supporting and driving mechanism fierialNo. 467,996. (No model.)

side bars are forced downward, the springs 7 and 7 acting on the lugs 5and 5.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

1. In a grain-elevator, an upper pair of side bars pivotally hung at oneend, a lower pair of side bars pivotally hung beneath the free ends ofthe upper side bars, an endless apron mounted on each pair of side bars,mechanism for driving the aprons and a pressure device attached to thefree end of each pair of side bars, substantially as described and forthe purpose set forth.

2. In a grain-elevator, the combination with a slotted casing, of anupper and alower drumshaft journaled in the casing, an upper and a lowerpair of side bars, each pair pivotally hung on its respectivedrum-shaft, an upper idler-drum j ournaled in the free ends of the lowerpair of side bars, a lower idler-drum journaled in the free ends of thelower pair of side bars, an upper and a lower drivingdrum, eachdriving-drum fixed on its respective drum-shaft between the side bars,an upper endless apron passing around its respective driving and idlerdrums, a lower endless apron passing around its respective driving andidler drums, and a spring-pressed lug fixed to each side bar of eachpair and extending outward through its respective slot in the casing,substantially as described and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN B. GRIMMETT. Witnesses:

H. P. Rnnns, J. B. SMITH.

